A metal disc of radius R rotates with an...

A metal disc of radius R rotates with an angular velcoity `omega` about an axis perpendiclar to its plane passing through its centre in a magnetic field B acting perpendicular to the plane of the disc. Calculate the induced emf between the rim and the axis of the disc.

`BpiR^(2)`

`(2Bpi^(2)R^(2))/(omega)`

`BpiR^(2)omega`

`(BR^(2)omega)/(2)`

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